mysql-server meta package for mariadb-server

OMD (and probably a lot of other packages) depends on mysql-server, so we can’t just use mariadb-server easily. Or can we?

Sure, we can rebuild the whole OMD thing with different dependencies, which will take a while. Or, we can just create a meta-package called mysql-server, which just depends on mariadb-server and satisfies the dependency for OMD.

I do not care about packaging hell, i just use fpm, which requires ruby. Also i do not want to mess up my system, so i just use docker.